%0 Journal Article %T Transient Hyperintensity On Diffusion-Weighted MRI in Transient Global Amnesia %A Gulcin BENBIR %A Sibel ERTAN %A Sait ALBAYRAM %A Batuhan KARA %J Journal of Neurological Sciences %D 2009 %I Ege University Press %X Objects: Different theories were suggested on the etiopathogenesis of transient global amnesia.Methods: We demonstrate a patient with transient global amnesia, in whom, a transient hyperintense signal change on left hippocampus was detected in diffusion- and T2- weighted magnetic resonance images.Conclusion: The absence of vascular risk factors or atherosclerotic changes in neuroimaging, in addition to transient lesion and antecedent migraine attack suggest the phenomenon of ˇ°spreading depressionˇ± secondary to migraine as underlying etiopathogenetic mechanism of transient global amnesia in this patient. %K Transient global amnesia %K diffusion-weighted MRI %K spreading depression %U http://www.jns.dergisi.org/pdf/pdf_JNS_280.pdf